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[Solved] In 1995, 13,000 internet users were surveyed and asked about their willingness to pay fees for access to websites. Of these, 2,938 were definitely

Question: In 1995, 13,000 internet users were surveyed and asked about their willingness to pay fees for access to websites. Of these, 2,938 were definitely not willing to pay such fees. How large a sample is necessary to estimate the proportion of interest to within 2% in a 95% confidence interval?